Leather-skiving machine



2 Sheets-Sheet 1.

(No Model.)

J. N. WHITOOMB. LEATHER SKIVING MAGHINB.

Patented May 17, 1887.

www 0.

(No Model.)

' 4 2 sheets-sheet 2 -J.,N. WHITCOMB.

LEATHER SKIVING MACHINE. No. 363,265.

Patented May 17, 118187.

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`Il Y "Hmmm NTTED STATES PATENT einen..

JASON N, WHITCOMB, OF BROCKTON, MASSACHUSETTS.

LEATHERV-SKIVING MACHINE.

SPECIFICATION forming part of Letters Patent No. 363,265, dated May 17, 1887.

' Application filed February 14, 1387. Serial No. 227,565. (No model.)

To all whom, t may concern.-

Be it known that I, JASON N. WHITCOMB,

da citizen of the United States,and a resident of Brockton, in the county of Plymouth and State of Massachusetts, have invented certain new and useful Improvements in Leather- Skiving Machines; and I do hereby declare that the following is a full,clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which- Y Figure 1 is a'perspective view of a leather` skiving machine provided with my improvements. Fig. 2 is a side view of the same. Fig. 3 is a similar view taken from the other side. Fig. 4L is a front view. Fig. 5 is a vertical sectional view of the adjustable upright, and Fig. G is a perspective detail view of the guard on the cutter-shaft.

Similar numerals of reference indicate corresponding parts in all the igures.

My invention has relation to that class of machines for skiving leather Vamps, quarters, or other portions of leather for shoes and boots, or for other leather work, in which the leather is fed under arevolving'pcutter-disk journaled nearly horizontal and a revolving cutter-disk journaled above the other disk at the angle desired to be given to the skived edge; and it contemplates certain improvements upon the so'called Amazeen Leather! Skiving Machine,77 for which Letters Patent No. 200,682 were granted to Christopher Amazeen on the 26th day of February, 1876, and No. 220,906, on the 28th day of October, 1879; and it consists to that end in the'improv'ed construction and combination of parts of such a machine, as hereinafter more fully described and claimed.

In the accompanying drawings, the numeral 1 indicates the frame for the machine, which frame is of nearly the same construction as the frame in the above-referred-to machine, and is formed `with horizontal bearings 2 for the feeder-shaft 3, which is provided at one end with the feed-roller 4, and at its other end with a band-pulley, 5.

The frame is formed above the feedroller with vertical bearings 6, in which the shaft 7 of the lower cutter-disk, 8, is j ournaled,the saidshaft having a coiled spring, 9, for the purpose of cushioning it and allowing it upward play, and the `upper end of the shaft is provided with a horizontal band-pulley, 10.

A block, 11, is pivoted upon the forward face of the machine-frame upon a bolt, 12, and has a smaller block, 13, hinged to its inner end, the said block having a vertical slot, 14, with which it may slide upon a bolt, 15, adjusting 'the angle of the bearings 16 at the outer end of the block, the shaft 17 of the upper cutter-disk, 18, beingjournaled in these bearings and sliding in the same, a screw, 19, being journaled parallel to the shaft, and having its threaded portion revolving in a block, 20, sliding with its ends parallel to the shaft, and

having a tongue, 21, upon its inner side, en

gaging a groove, 22, in the shaft, so that the shaft and cutter-disk may be raised and lowered by turning the screw, and the angle or bevel of the skived edge may be adjusted by tilting the pivoted block having the bearings for the shaft. l

The upper end of the shaft for this cutterdisk is provided with a horizontal band-pulley, 23. rIhe machine is provided. with the usual adj ustablefguide, 24, andthe shaft of the upper cutter-disk is formed with a beveled washer, 25, upon the upper side of the disk, and with a collar, 2G, above the washer. A sleeve, 27, iits upon this collar, having it revolving within it, and isprovided with astrip, 28, secured to it, and havinga forwardly-projecting portion, 29, bearing against the guide,

and a laterally projecting portion, 30, the lower edge of the strip being cut away, as shown at 31, to t upon the beveled washer.

A flange, 32, projects outward 'and slightly downward from the upper edge of the sleeve, being secured to the upper edges of the strip, and a lip, 33, projects radially from the sleeve and bears against a stop-pin, 34, preventing the sleeve from turning with the revolving shaft, while a spring, 35, is secured to the flange and bears against the' under side of the lower shaft-,bearing, preventing the shavings or slived-off strips of leather from forcing the guard formed by the sleeve and its strip and flange upward, the said shavings or strips being guided off to one side, and thus prevented roo from winding around the shafts of the cutterdisks.

A fiat upright, 36, is secured to the rear of the machine -fran1e, and is formed near its upper end with a screw-threaded perforation, 37, having a thumb-screw,38, passing rearward through it, and with a vertical slot, 39, below the pcrforation.

A bifurcated frame, 40, is hinged with its lower end to a longitudinally-slotted bar, 4l, adj ustably secured by a screw-bolt, 42, to the rear face of the lower end of the upright, and the lower portion of the bifurcated frame has a screw-bolt, 43, passing into it through the slot in the upright, so that the said frame and its slotted bar may be adjusted vertically upon the screw-bolts by the slots. The rear end of the thumb-screw bears against the forward face of the bifurcated frame, and may tilt the frame rearward when screwed against it, the upper screw-bolt being loosened to admit of the frame being tilted.y

l The arms of the bifurcated frame are formed with horizontal bearings 44, parallel tothe feeder-shaft, and at these bearings the arms are slightly inclined forward, as shown` at 45, and formed at their ends with bearings 46, lparallel to the other bearings.

An arm, 47, projects forward from the lower portion of the bifurcated frame at one edge of the same, and has a band-pulley, 48, journaled upon a stub-axle, 49, at the side of the forward end of the same.

` of steps, and a' belt, 53, passes around this cone-pulley and around a cone-pulley, 54, having corresponding and registering steps, the said pulley being secured upon a shaft, 55, journaled in the bearings at the bends of the arms of the bifurcated frame. This shaft is provided at its oth er end with a band-pulley, 56, around which passes a belt, 57, passing around the horizontal pulley upon the shaft of the upper cutter-disk, and another pulley, 58, is secured upon the shaft inside of the bearing, and has a belt, 59, passing over it and under the pulley upon the stub-axle. This counterpulley is formed with a smaller pulley, 60, upon its face, under which passes a belt, .61, passing over a large pulley, 62, upon a shaft, 63, journaled in the bearings at the ends of the arms of the bifurcated frame, and this shaftis provided with two pulleys, 64 and 65, one at each end, around which pass, respectively, a belt, 66, passing around the pulley upon the feeder-shaft, and a belt, 67, passing around the ulley upon the shaft of the lower cutter-disk.

twill thus be seen that by means of these shafts, pulleys, and belts the cutter-disks and feed- 7 rollers may be revolved, and the entire machine will run without any considerable. noise, thus doing away with the disa reeable noise caused by the rattling of cog-w eels and pinions in the machine referred to in the statement of the invention.

The machine may be driven at a considerably greater speed by using belt-gearing in the place of the cog-wheels7 pinions, and worm-gears, and the speed of the machine may be varied to suit various work by shifting the belt upon the steps of the cone-pulleys upon the drive-shaft and upon the shaft driven by the same. s

If the belts between the machine and the shafts upon the bifurcated frame become slack by use, `they may be all evenly tightened by tilting the ybifurcated frame rearward by means of the thumb-screw, and the shafts may be raised or lowered by raising or lowering the bifurcated frame and adjusting it by the screw-bolts passing through the vertical slots.

Having thus described my invention,l claim and desire to secure by Letters Patent of the United States- 1. In a leather-skiving machine having a guide and feed-roller and a revolving cutterdisk facing the roller, a guard upon the cutter-shaft, having a strip projecting with one end toward the guide and with the other end to one side, and having a shield or flange secured to the upper edge of the strip, as and for the purpose shown and set forth.

2. In a leather-skiving machine having a guide and a feed-roller, and a revolving cutter-disk facing the roller, a guard having the shaft of the disk revolving within it, and

formed with a strip having one end projecting toward the guide and one end projecting to ICO one side, and with a slightly-inclined shield or flange secured to the upper edge of the strip, and provided with a spring bearing against a bearing above the guard,and having aradiating lip bearing against a stop, preventing the guard from revolving with the shaft, as and for the purpose shown. and set forth.

3. In a leather-skiving machine, the comi a belt passing around one cutter-pulley and with a pulley at or near the middle, a large lcounter-pulley having a belt passing under it and over the former pulley, and providedwith a small pulley upon its face, and a shaft parallel to the horizontal shaft and provided with a pulley having a belt passing under the small counter-pulley, and with a pulley at one end having a belt passing around the pulley of the feeder-shaft, and with a pulley at the other end having a belt passing around the other cutterpulley, as and for the purpose shown and set forth.

'4. In a leather-skiving machine, the combination-of horizontal pulleys upon the vertical cutter-shafts, and a vertical pulley upon a horizontal feeder-shaft, and a vertical drive-pulley, with an upright having a screw-threaded perforation near its upper end, having a thumbscrew passing rearward through it, and having 5 a vertical slot, a bifurcated frame having` its lower end hinged to a longitudinally-slotted bar sliding adjustably upona screw-bolt in the upright, and having the end of the thumbscrew bearing against its forward face, shafts Io journaled in bearings in the frame parallel to the feedenshaft and having suitable pulleys,

and belts passing around the said pulleys and around the cutter-pulleys, feeder-pulley, and drive-pulley, as and for the purpose shown and set forth.

In testimony that I claim the foregoing as my own l have hereunto affixed my sgnaturein presence of two witnesses. v

JASON N. VHITCOMB.

Vitnesses:

ROBERT L. WILLIAMs, GHEsTER G. HILL. 

